EP 2141331 B1 20160706 - EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Title (en)
EXHAUST PURIFICATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Title (de)
ABGASREINIGER FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
DISPOSITIF DE PURIFICATION D'ÉCHAPPEMENT POUR MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- JP 2008057370 W 20080409
- JP 2007115690 A 20070425
Abstract (en)
[origin: EP2141331A1] In an internal combustion engine, an NO X selective reduction catalyst (15) is arranged in the engine exhaust passage, and a urea aqueous solution feed valve (17) is arranged in the engine exhaust passage upstream of the NO X selective reduction catalyst (15). Based on the detections results of an NO X purification rate detecting means for detecting the NO X purification rate by the NO X selective reduction catalyst (15), a urea aqueous solution feed amount detecting means for detecting the amount of feed of the urea aqueous solution, and a urea aqueous solution concentration detecting means for detecting the concentration of the urea aqueous solution, abnormalities in the NO X selective reduction catalyst (15), urea aqueous solution feed system, and urea aqueous solution are judged.
IPC 8 full level
B01D 53/94 (2006.01); F01N 3/08 (2006.01); F01N 3/18 (2006.01); F01N 3/20 (2006.01)
CPC (source: EP US)
B01D 53/90 (2013.01 - EP US); B01D 53/9495 (2013.01 - EP US); F01N 3/2066 (2013.01 - EP US); F01N 11/007 (2013.01 - EP US); F01N 13/009 (2014.06 - EP US); B01D 2251/2067 (2013.01 - EP US); B01D 2255/50 (2013.01 - EP US); B01D 2257/404 (2013.01 - EP US); F01N 2550/03 (2013.01 - EP US); F01N 2550/05 (2013.01 - EP US); F01N 2610/02 (2013.01 - EP US); F01N 2900/1818 (2013.01 - EP US); Y02T 10/12 (2013.01 - EP US); Y02T 10/40 (2013.01 - EP US)
Citation (examination)
- EP 1681443 A1 20060719 - NISSAN DIESEL MOTOR CO [JP]
- JP 2006125322 A 20060518 - NISSAN DIESEL MOTOR CO
- EP 1676984 A1 20060705 - NISSAN DIESEL MOTOR CO [JP]
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 2141331 A1 20100106; EP 2141331 A4 20101215; EP 2141331 B1 20160706; CN 101548077 A 20090930; CN 101548077 B 20120613; JP 2008274765 A 20081113; JP 4710868 B2 20110629; US 2009301059 A1 20091210; US 8132402 B2 20120313; WO 2008133122 A1 20081106
DOCDB simple family (application)
EP 08740456 A 20080409; CN 200880000936 A 20080409; JP 2007115690 A 20070425; JP 2008057370 W 20080409; US 30944208 A 20080409